I have discovered, on YouTube, videos of what it being called a, "Desulfating Capacitative Battery Charger".
The components of this device begins with a 50 MFD uF Run Capacitor 370 vac Volts, a Bridge Rectifier, regular 120VAC dial timer, and a voltage meter to monitor voltage at all times.
This device is, as purported by its various designers, a device to desulfate the plates in Lead-Acid, flooded, AGM, or sealed batteries of various DC voltage configurations.
It appears so far, to work as designed, but before I follow any of these instructions to build one, I believe, or at least for my own sense of mental security, it is missing one vital component, and that is the ability to control maximum voltage output, i.e; 6V, 12V, etc.
Some videos show this connected to a 12VDC car battery, and charging at the rate of 14.73v. I have a battery bank of 6V Trojan Solar batteries valued at $360.00 each new, and I do not trust that this device would not cause damage if the maximum voltage is not controlled.
What would I need to add to such a device to control this maximum voltage output, to prevent over-charging of my 6V batteries, should I decide to build one of these?
Note: While I am not an electronics engineer, I question the use of the descriptor, "Capacitative", as I've never heard this word before.